Commit | Line | Data |
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b5f0675e | 1 | /* |
1e008c14 DF |
2 | * Copyright (c) 1983 Regents of the University of California. |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
b5f0675e EW |
5 | */ |
6 | ||
717de9f0 | 7 | #ifndef lint |
1e008c14 DF |
8 | static char sccsid[] = "@(#)dr_2.c 5.1 (Berkeley) %G%"; |
9 | #endif not lint | |
717de9f0 | 10 | |
b3a57661 EW |
11 | #include "driver.h" |
12 | ||
13 | #define couldwin(f,t) (f->specs->crew2 > t->specs->crew2 * 1.5) | |
717de9f0 CL |
14 | |
15 | thinkofgrapples() | |
16 | { | |
b3a57661 EW |
17 | register struct ship *sp, *sq; |
18 | char friendly; | |
717de9f0 | 19 | |
b3a57661 EW |
20 | foreachship(sp) { |
21 | if (sp->file->captain[0] || sp->file->dir == 0) | |
22 | continue; | |
23 | foreachship(sq) { | |
24 | friendly = sp->nationality == capship(sq)->nationality; | |
25 | if (!friendly) { | |
26 | if (sp->file->struck || sp->file->captured != 0) | |
27 | continue; | |
28 | if (range(sp, sq) != 1) | |
29 | continue; | |
30 | if (grappled2(sp, sq)) | |
31 | if (toughmelee(sp, sq, 0, 0)) | |
32 | ungrap(sp, sq); | |
33 | else | |
34 | grap(sp, sq); | |
35 | else if (couldwin(sp, sq)) { | |
36 | grap(sp, sq); | |
37 | sp->file->loadwith = L_GRAPE; | |
717de9f0 | 38 | } |
b3a57661 EW |
39 | } else |
40 | ungrap(sp, sq); | |
717de9f0 CL |
41 | } |
42 | } | |
43 | } | |
44 | ||
717de9f0 CL |
45 | checkup() |
46 | { | |
b3a57661 EW |
47 | register struct ship *sp, *sq; |
48 | register char explode, sink; | |
717de9f0 | 49 | |
b3a57661 | 50 | foreachship(sp) { |
8b4ea3df EW |
51 | if (sp->file->dir == 0) |
52 | continue; | |
b3a57661 EW |
53 | explode = sp->file->explode; |
54 | sink = sp->file->sink; | |
b3a57661 EW |
55 | if (explode != 1 && sink != 1) |
56 | continue; | |
8b4ea3df EW |
57 | if (die() < 5) |
58 | continue; | |
59 | Write(sink == 1 ? W_SINK : W_EXPLODE, sp, 0, 2, 0, 0, 0); | |
6ca45914 EW |
60 | Write(W_DIR, sp, 0, 0, 0, 0, 0); |
61 | if (snagged(sp)) | |
62 | foreachship(sq) | |
63 | cleansnag(sp, sq, 1); | |
b3a57661 EW |
64 | if (sink != 1) { |
65 | makesignal(sp, "exploding!", (struct ship *)0); | |
66 | foreachship(sq) { | |
67 | if (sp != sq && sq->file->dir && range(sp, sq) < 4) | |
68 | table(RIGGING, L_EXPLODE, sp->specs->guns/13, sq, sp, 6); | |
69 | } | |
70 | } else | |
71 | makesignal(sp, "sinking!", (struct ship *)0); | |
717de9f0 CL |
72 | } |
73 | } | |
74 | ||
75 | prizecheck() | |
76 | { | |
b3a57661 | 77 | register struct ship *sp; |
717de9f0 | 78 | |
b3a57661 EW |
79 | foreachship(sp) { |
80 | if (sp->file->captured == 0) | |
81 | continue; | |
82 | if (sp->file->struck || sp->file->dir == 0) | |
83 | continue; | |
0483f58f | 84 | if (sp->specs->crew1 + sp->specs->crew2 + sp->specs->crew3 > sp->file->pcrew * 6) { |
b3a57661 EW |
85 | Write(W_SIGNAL, sp, 1, |
86 | (int)"prize crew overthrown", 0, 0, 0); | |
0483f58f EW |
87 | Write(W_POINTS, sp->file->captured, 0, sp->file->captured->file->points - 2 * sp->specs->pts, 0, 0, 0); |
88 | Write(W_CAPTURED, sp, 0, -1, 0, 0, 0); | |
717de9f0 CL |
89 | } |
90 | } | |
91 | } | |
92 | ||
b3a57661 | 93 | strend(str) |
717de9f0 CL |
94 | char *str; |
95 | { | |
b3a57661 | 96 | register char *p; |
717de9f0 | 97 | |
b3a57661 EW |
98 | for (p = str; *p; p++) |
99 | ; | |
100 | return p == str ? 0 : p[-1]; | |
717de9f0 CL |
101 | } |
102 | ||
b3a57661 EW |
103 | closeon(from, to, command, ta, ma, af) |
104 | register struct ship *from, *to; | |
105 | char command[]; | |
106 | int ma, ta, af; | |
717de9f0 CL |
107 | { |
108 | int high; | |
109 | char temp[10]; | |
110 | ||
111 | temp[0] = command[0] = '\0'; | |
112 | high = -30000; | |
b3a57661 | 113 | try(command, temp, ma, ta, af, ma, from->file->dir, from, to, &high, 0); |
717de9f0 CL |
114 | } |
115 | ||
b3a57661 | 116 | int dtab[] = {0,1,1,2,3,4,4,5}; /* diagonal distances in x==y */ |
717de9f0 | 117 | |
b3a57661 EW |
118 | score(movement, ship, to, onlytemp) |
119 | char movement[]; | |
120 | register struct ship *ship, *to; | |
121 | char onlytemp; | |
717de9f0 | 122 | { |
1eda8103 EW |
123 | char drift; |
124 | int row, col, dir, total, ran; | |
b3a57661 | 125 | register struct File *fp = ship->file; |
717de9f0 | 126 | |
b3a57661 EW |
127 | if ((dir = fp->dir) == 0) |
128 | return 0; | |
129 | row = fp->row; | |
130 | col = fp->col; | |
131 | drift = fp->drift; | |
132 | move(movement, ship, &fp->dir, &fp->row, &fp->col, &drift); | |
133 | if (!*movement) | |
134 | (void) strcpy(movement, "d"); | |
135 | ||
136 | ran = range(ship, to); | |
137 | total = -50 * ran; | |
138 | if (ran < 4 && gunsbear(ship, to)) | |
139 | total += 60; | |
140 | if ((ran = portside(ship, to, 1) - fp->dir) == 4 || ran == -4) | |
141 | total = -30000; | |
142 | ||
143 | if (!onlytemp) { | |
144 | fp->row = row; | |
145 | fp->col = col; | |
146 | fp->dir = dir; | |
147 | } | |
148 | return total; | |
149 | } | |
150 | ||
b3a57661 EW |
151 | move(p, ship, dir, row, col, drift) |
152 | register char *p; | |
153 | register struct ship *ship; | |
1eda8103 EW |
154 | register char *dir; |
155 | register short *row, *col; | |
156 | register char *drift; | |
b3a57661 EW |
157 | { |
158 | int dist; | |
159 | char moved = 0; | |
160 | ||
161 | for (; *p; p++) { | |
162 | switch (*p) { | |
163 | case 'r': | |
164 | if (++*dir == 9) | |
165 | *dir = 1; | |
166 | break; | |
167 | case 'l': | |
168 | if (--*dir == 0) | |
169 | *dir = 8; | |
170 | break; | |
171 | case '1': case '2': case '3': case '4': | |
172 | case '5': case '6': case '7': | |
173 | moved++; | |
174 | if (*dir % 2 == 0) | |
175 | dist = dtab[*p - '0']; | |
176 | else | |
177 | dist = *p - '0'; | |
178 | *row -= dr[*dir] * dist; | |
179 | *col -= dc[*dir] * dist; | |
180 | break; | |
717de9f0 | 181 | } |
717de9f0 | 182 | } |
b3a57661 | 183 | if (!moved) { |
9d517234 | 184 | if (windspeed != 0 && ++*drift > 2) { |
b3a57661 | 185 | if (ship->specs->class >= 3 && !snagged(ship) |
acfebbf7 | 186 | || (turn & 1) == 0) { |
b3a57661 EW |
187 | *row -= dr[winddir]; |
188 | *col -= dc[winddir]; | |
189 | } | |
190 | } | |
191 | } else | |
acfebbf7 | 192 | *drift = 0; |
717de9f0 CL |
193 | } |
194 | ||
b3a57661 EW |
195 | try(command, temp, ma, ta, af, vma, dir, f, t, high, rakeme) |
196 | register struct ship *f, *t; | |
197 | int ma, ta, af, *high, rakeme; | |
198 | char command[], temp[]; | |
717de9f0 CL |
199 | { |
200 | register int new, n; | |
201 | char st[4]; | |
b3a57661 | 202 | #define rakeyou (gunsbear(f, t) && !gunsbear(t, f)) |
717de9f0 CL |
203 | |
204 | if ((n = strend(temp)) < '1' || n > '9') | |
b3a57661 EW |
205 | for (n = 1; vma - n >= 0; n++) { |
206 | (void) sprintf(st, "%d", n); | |
207 | (void) strcat(temp, st); | |
208 | new = score(temp, f, t, rakeme); | |
209 | if (new > *high && (!rakeme || rakeyou)) { | |
717de9f0 | 210 | *high = new; |
b3a57661 | 211 | (void) strcpy(command, temp); |
717de9f0 | 212 | } |
b3a57661 EW |
213 | try(command, temp, ma-n, ta, af, vma-n, |
214 | dir, f, t, high, rakeme); | |
717de9f0 CL |
215 | rmend(temp); |
216 | } | |
b3a57661 EW |
217 | if (ma > 0 && ta > 0 && (n = strend(temp)) != 'l' && n != 'r' || !strlen(temp)) { |
218 | (void) strcat(temp, "r"); | |
219 | new = score(temp, f, t, rakeme); | |
220 | if (new > *high && (!rakeme || gunsbear(f, t) && !gunsbear(t, f))) { | |
717de9f0 | 221 | *high = new; |
b3a57661 | 222 | (void) strcpy(command, temp); |
717de9f0 | 223 | } |
b3a57661 | 224 | try(command, temp, ma-1, ta-1, af, min(ma-1, maxmove(f, (dir == 8 ? 1 : dir+1), 0)), (dir == 8 ? 1 : dir+1),f,t,high,rakeme); |
717de9f0 CL |
225 | rmend(temp); |
226 | } | |
b3a57661 EW |
227 | if ((ma > 0 && ta > 0 && (n = strend(temp)) != 'l' && n != 'r') || !strlen(temp)){ |
228 | (void) strcat(temp, "l"); | |
229 | new = score(temp, f, t, rakeme); | |
230 | if (new > *high && (!rakeme || (gunsbear(f, t) && !gunsbear(t, f)))){ | |
717de9f0 | 231 | *high = new; |
b3a57661 | 232 | (void) strcpy(command, temp); |
717de9f0 | 233 | } |
b3a57661 | 234 | try(command, temp, ma-1, ta-1, af, (min(ma-1,maxmove(f, (dir-1 ? dir-1 : 8), 0))), (dir-1 ? dir -1 : 8), f, t, high, rakeme); |
717de9f0 CL |
235 | rmend(temp); |
236 | } | |
237 | } | |
9224751f EW |
238 | |
239 | rmend(str) | |
240 | char *str; | |
241 | { | |
242 | register char *p; | |
243 | ||
244 | for (p = str; *p; p++) | |
245 | ; | |
246 | if (p != str) | |
247 | *--p = 0; | |
248 | } |